大单小单大双小双技巧

简介：Zhao Dongtao was walking under the paulownia tree, and there were three or four naughty-looking students beside him. Standing side by side with Zhao Dongtao was Han Chen, who was tall, with trendy one-inch hair and a red, white and blue school uniform. His expression was not as arrogant as before, and he looked much more low-key. He had a schoolbag on one shoulder and his hands in his trouser pockets.